pre-commit autoremove empty code blocks

scripts/markdown_conventions.py

@@ -6,9 +6,12 @@
 import utils
 import re
 
-open_tag_pattern = re.compile(r'^```\S+\n', flags=re.MULTILINE)
+open_tag_pattern = re.compile(r'^```\S+.*\n', flags=re.MULTILINE)
 close_tag_pattern = re.compile(r'\n```$', flags=re.MULTILINE)
 
+empty_block_pattern = re.compile(
+    r'^```\S+.*\n(\s*\n)*\n```\s*$', flags=re.MULTILINE)
+
 
 def has_well_formed_blocks(mdcode, pos=0):
     """
@@ -75,6 +78,7 @@ def has_well_formed_blocks(mdcode, pos=0):
         if top_level_header_after_first_line.search(output):
             print(
                 f"Error! File '{fpath}' has a top level header after the first line. Please increase it.")
+            status |= STATUS_TOP_LEVEL_HEADER_AFTER_FIRST_LINE
 
         # TODO: print line numbers
         if empty_section_nonincreasing_level.search(output):
@@ -83,6 +87,8 @@ def has_well_formed_blocks(mdcode, pos=0):
 
             status |= STATUS_EMPTY_SECTION_NONINCREASING_LEVEL
 
+        output = empty_block_pattern.sub('\n', output)
+
         if output != inputText:
             with open(fpath, 'w') as f:
                 f.write(output)